Fluid level sensor



FIG. 1 is a perspective view of a fluid level sensor, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

Broken line areas in the figures form no part of the claimed design and are for illustrative purposes only. 

CLAIM The ornamental design for a fluid level sensor, as shown and described. 